Solar Panel Comparison
EcoFlow 220W Bifacial Portable Solar Panel vs SunPower/Maxeon Maxeon 3 400W
The Maxeon 3 400W delivers 400W, 180W more than the 220W Bifacial Portable Solar Panel at 220W.
220W Bifacial Portable Solar Panel has a higher efficiency of 23% versus 22.6% for the Maxeon 3 400W.
Here's how they compare across all key specifications.
Spec
EcoFlow
220W Bifacial Portable Solar Panel
220W
23% efficiency
SunPower/Maxeon
Maxeon 3 400W
400W
22.6% efficiency
Full Specification Comparison
| Spec | 220W Bifacial Portable Solar Panel | Maxeon 3 400W |
|---|---|---|
| Performance | ||
| Power Output | 220 W | 400 W |
| Efficiency | 23% | 22.6% |
| Cell Type | — | Monocrystalline IBC Gen III |
| Temp. Coeff. | — | -0.27 %/°C |
| Number of Cells | — | 104 |
| Bifacial | Yes | No |
| Electrical | ||
| Voc | 21.8 V | 75.6 V |
| Vmp | 18.4 V | 65.2 V |
| Isc | 13 A | 6.65 A |
| Imp | 11.96 A | 6.14 A |
| Max System Voltage | — | 1000 V |
| Operating Temp | Up to 149 °C | -40 to +85 °C |
| Physical | ||
| Dimensions | 1830x820x25 (unfolded) / 500x820x32 (folded) mm | 1046x1690x40 mm |
| Weight | 9.5 kg | 19 kg |
| Frame Colour | Black | Black |
| Connector Type | MC4 | Staubli MC4 |
| Junction Box IP | IP67 | — |
| Warranty & Certification | ||
| Product Warranty | — | 25 years |
| Power Warranty | — | 25 years (92% at yr 25, 0.25%/yr degradation) |
| MCS Certified | No | No |
| Certifications | — | IEC 61215, IEC 61730, UL 61730 |
| Pricing (UK) | ||
| Retail Price | £349.00 | — |
| Price per Watt | £1.586/W | — |
Frequently Asked Questions
Which is more efficient, the 220W Bifacial Portable Solar Panel or the Maxeon 3 400W?
The 220W Bifacial Portable Solar Panel is more efficient at 23%, compared to 22.6% for the Maxeon 3 400W. Higher efficiency means more power generated per square metre of roof space.
Which panel produces more power, the 220W Bifacial Portable Solar Panel or the Maxeon 3 400W?
The Maxeon 3 400W has a higher rated output at 400W. This means fewer panels would be needed to reach the same system size compared to the 220W Bifacial Portable Solar Panel.
Which solar panel should I choose for my home — the 220W Bifacial Portable Solar Panel or the Maxeon 3 400W?
The right choice depends on your priorities. If maximising energy generation per panel is key, consider efficiency and wattage. If budget is your main concern, compare price per watt. Both panels have their merits — use our Solar Estimator to see how each would perform in your specific home setup.
EcoFlow
220W Bifacial Portable Solar Panel
220W · 23% efficiency
View full specs →SunPower/Maxeon
Maxeon 3 400W
400W · 22.6% efficiency · Monocrystalline IBC Gen III
View full specs →More Comparisons
See how these panels perform in your home
Use our Solar Estimator to calculate system size, installation cost, and payback period — with either of these panels as a starting point.